How to reclaim unused space in SYSAUX tablespace in Oracle?

I have 6gb file for SYSAUX table space in 18xe oracle database.

SYSAUX table space has 61% free space :

    select
       fs.tablespace_name                          as Tablespace,
       (df.totalspace - fs.freespace)              as Used_MB,
       fs.freespace                                as Free_MB,
       df.totalspace                               as Total_MB,
       round(100 * (fs.freespace / df.totalspace)) as Percentage_Free
    from
       (select tablespace_name, round(sum(bytes) / 1048576) TotalSpace from dba_data_files group by tablespace_name) df,
       (select tablespace_name, round(sum(bytes) / 1048576) FreeSpace from dba_free_space group by tablespace_name) fs
    where
       df.tablespace_name = fs.tablespace_name
       and df.tablespace_name = 'SYSAUX';

returns

enter image description here

So I would like to reclaim the 61% free space if possible.

ALTER DATABASE DATAFILE '...XESYSAUX01.DBF' RESIZE 5000M; 

But I’m getting the error :

ORA-03297: file contains used data beyond requested RESIZE value
ALTER TABLESPACE SYSAUX SHRINK SPACE KEEP 5000M;

Error :

ORA-12916: cannot shrink permanent or dictionary managed tablespace
ALTER TABLESPACE sysaux RESIZE 5000M;

Error

ORA-32773: operation not supported for smallfile tablespace SYSAUX

Does anyone know to relcaim this space please ?

Thanks.